SOURCE and more info at: www.d-a-l.com (posted by chou)
AMI (American Megatrends International) BIOS uses beeps of the same length and pitch. The error is displayed as a number of beeps. For example, 4 beeps indicated a timer failure.
1 Beep
(No video) Memory refresh failure
Bad memory
2 Beeps
Memory parity error Bad memory
3 Beeps
Base 64K mem failure
Bad memory
4 Beeps
Timer not operational
Bad motherboard
5 Beeps
Processor error
Bad processor
6 Beeps
8042 Gate A20 failure
Bad CPU or Motherboard
7 Beeps
Processor exception
Bad processor
8 Beeps
Video memory error
Bad video card or memory
9 Beeps
ROM checksum error
Bad BIOS
10 Beeps
CMOS checksum error
Bad motherboard
11 Beeps
Cache memory bad
Bad CPU or motherboard
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